Last Frost Day

Frost history / Lakeview 2 Nnw, OR

Lakeview 2 Nnw, OR: frost dates by year

Last spring and first fall frost at NOAA station USC00354670, 1951 to 2008, measured from daily minimum temperatures.

Elevation 4,890 ft, 42.241, -120.368. Download the data (JSON), NOAA daily records

Summary at 32°F

Last spring frostFirst fall frost
MedianJun 7Sep 19
EarliestMay 3 (1957)Aug 5 (2002)
LatestJul 17 (1993)Oct 20 (1979)
Trend2.9 days later per decade3.0 days earlier per decade
Years with data5251

At 28°F (hard freeze) the median last spring date is May 18 and the median first fall date is Oct 2.

The trend is a straight-line fit through the years with a freeze. A positive spring trend means the last frost now comes later. Short or patchy records give noisy trends.

Chart

Last spring frost (32°F)

Apr 15Apr 30May 15May 30Jun 14Jun 29Jul 14Jul 29196019701980199020001951: Jun 51952: Jun 151953: Jun 131954: Jun 161955: Jul 71956: Jun 51957: May 31958: May 121959: May 281960: May 241961: May 161962: Jun 51963: May 121964: Jun 191966: Jun 41967: Jun 21968: Jun 291969: May 41970: May 121971: May 311972: May 181973: Jun 181974: May 201976: Jul 11977: May 281978: Jun 251979: Jun 171980: Jun 271981: Jul 71982: Jun 61983: Jun 191984: Jun 211985: Jun 21988: Jun 291989: May 291990: Jun 151991: Jun 51993: Jul 171994: Jun 141995: Jun 71996: May 231997: May 261998: Jun 261999: Jun 252000: Jul 42001: Jun 42002: Jun 112003: Jun 222004: Jun 112005: Jun 72006: May 292007: Jun 25

First fall frost (32°F)

Jul 29Aug 13Aug 28Sep 12Sep 27Oct 12Oct 27196019701980199020001951: Oct 51952: Oct 151953: Sep 231954: Sep 121955: Sep 261956: Sep 231957: Sep 201958: Sep 241959: Sep 211960: Aug 281961: Sep 211962: Oct 31963: Oct 71964: Aug 291965: Sep 171966: Oct 121967: Oct 41969: Sep 211970: Sep 131971: Sep 181972: Sep 111973: Sep 211974: Sep 281975: Oct 71977: Sep 211978: Sep 81979: Oct 201980: Aug 301981: Sep 201982: Sep 111983: Sep 91984: Sep 211986: Sep 91988: Sep 181989: Oct 31990: Oct 31991: Sep 81993: Sep 141994: Sep 151996: Sep 41998: Sep 191999: Aug 312000: Sep 232001: Oct 72002: Aug 52003: Sep 102004: Sep 112005: Sep 102006: Sep 152007: Sep 152008: Aug 30

Dots are single years. The gray line is the median, the green line the fitted trend.

Year by year

YearLast spring 32°FFirst fall 32°FLast spring 28°FFirst fall 28°F
2008no dataAug 30no dataAug 30
2007Jun 25Sep 15May 5Sep 29
2006May 29Sep 15Apr 19Sep 15
2005Jun 7Sep 10Apr 18Sep 10
2004Jun 11Sep 11May 29Sep 13
2003Jun 22Sep 10May 18Sep 17
2002Jun 11Aug 5Jun 8Sep 7
2001Jun 4Oct 7Jun 4Oct 9
2000Jul 4Sep 23May 31Sep 23
1999Jun 25Aug 31May 16Aug 31
1998Jun 26Sep 19May 21Oct 4
1997May 26no dataMay 25no data
1996May 23Sep 4May 4Sep 4
1995Jun 7no dataJun 6no data
1994Jun 14Sep 15Jun 8Sep 15
1993Jul 17Sep 14May 8Oct 18
1991Jun 5Sep 8Jun 5Oct 24
1990Jun 15Oct 3May 25Oct 6
1989May 29Oct 3May 29Oct 4
1988Jun 29Sep 18Jun 29Sep 18
1986no dataSep 9no dataSep 23
1985Jun 2no dataJun 2no data
1984Jun 21Sep 21May 16Sep 23
1983Jun 19Sep 9May 9Oct 3
1982Jun 6Sep 11May 5Sep 26
1981Jul 7Sep 20Jun 14Oct 5
1980Jun 27Aug 30May 24Oct 17
1979Jun 17Oct 20May 10Oct 21
1978Jun 25Sep 8Jun 11Sep 17
1977May 28Sep 21May 18Sep 30
1976Jul 1no dataMay 11no data
1975no dataOct 7no dataOct 8
1974May 20Sep 28May 20Oct 21
1973Jun 18Sep 21Apr 21Oct 4
1972May 18Sep 11Apr 30Oct 25
1971May 31Sep 18May 31Oct 2
1970May 12Sep 13May 12Sep 13
1969May 4Sep 21Apr 30Oct 4
1968Jun 29no dataMay 6no data
1967Jun 2Oct 4May 12Oct 6
1966Jun 4Oct 12Jun 4Oct 14
1965no dataSep 17no dataSep 17
1964Jun 19Aug 29May 7Oct 10
1963May 12Oct 7Apr 27Oct 12
1962Jun 5Oct 3May 20Oct 5
1961May 16Sep 21May 5Sep 29
1960May 24Aug 28May 22Oct 8
1959May 28Sep 21May 19Sep 27
1958May 12Sep 24Apr 25Sep 24
1957May 3Sep 20Apr 25Sep 20
1956Jun 5Sep 23Apr 29Oct 13
1955Jul 7Sep 26May 14Sep 26
1954Jun 16Sep 12Jun 1Sep 18
1953Jun 13Sep 23May 27Oct 2
1952Jun 15Oct 15Jun 13Oct 26
1951Jun 5Oct 5Apr 30Oct 5

"none" means the station recorded no freeze at that threshold in that half of the year. "no data" means more than 10% of the season's daily readings were missing. Years with no usable data are left out. See the methodology for the rules, and the ZIP lookup for 1991 to 2020 frost probabilities.